Recent content by Sangster21

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    MCM 165 Harmonic balancer

    I am installing a rebuilt MCM 165 I 6 back into my boat and the rubber on the harmonic balancer looks pretty bad, OK so I buggered it up pulling it off the engine at disassemble. I knew I shouldn't try with a 3 jaw puller, but I did. I really didn't give it much of a pull before I ran off to...
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    MC 165 ARP head studs

    I am still trying to resolve my issue with coolant loss and steamy blowby. Anyway I have installed the pressure tested and machined cylinder head with a new head gasket and I am replacing the 40 year old cylinder head head bolts with ARP studs. Couple of issues, first off you must be careful...
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    Inline 6 coolant loss and steamy crankcase vent

    I am going to start a new thread on this issue as I believe I have had some other issues that have been confounding this one. I have a recently rebuilt (bored 0.030" over, new pistons, cam, bearings, head done etc ) chev inline 6 250 cu in mercruiser 165, and am having an issue that is making me...
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    High pressure trim cylinders

    I have an MC165 with an MC1 drive, I think circa 1977 or so. I have just noted a leak on one of the trim rams. Not a gusher, but leaking some oil in drips. The leak appears to be coming from where the cylinder housing fits into the eye near near the transom end. What is the chance of effecting a...
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    marine or auto head gasket

    I am replacing the head gasket on my Mercruiser I6 250cu inch engine. It has a closed cooling system, so only antifreeze circulates the engine. Do I need to use a marine specific head gasket or is an automotive version acceptable? Alan
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    Mercruiser 165 - cylinder head?

    I have posted bits of this previously, so here goes. Had my 250cu in I6 rebuilt in Nov by a reputable engine rebuilder. New pistons (.030 +) new cam, head redone (magnaflux, guides, valve grind, seals etc), full meal deal, didn't cheap out on anything. Fired up nicely, tuning on the muffs in the...
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    Prop for MC165 I6

    I have a 21 ft fiberglass cuddy cabin boat. Not sure on the weight, but I don't think it is on the heavy side. It has been rebuilt with new stringers/transom/deck, so no waterlogged foam here. I haven't measured the deadrise, but I am guessing 17 degrees or so. I have a rebuilt MC 165 and...
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    Hydraulic steering upgrade

    I don't think this is possible, but I'll ask anyway. I have an MC-1 outdrive, the steering is cable actuated. Is there a way to install a Baystar pump and hook up a ram to push/pull the steering arm for the outdrive? I would not bother until such time as my mechanical steering went south, but...
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    MC1 water pump install question

    I have just installed a new water pump and base in my '77 (I think) MC1 outdrive. I don't think I missed anything, but am asking for some input. The plastic water tube that goes from the water pump to the brass tube from the leg seems to be a fairly sloppy fit. I really don't think I have missed...
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    cooling issue after rebuild

    I have just re installed a fresh rebuilt I6 250cu in mercruiser with MC 1 drive, vintage 1976. Got it timed and idle adjustment with a small hitch on the way. We were working on the idle adjustment, when we manually opened the throttle, it got stuck in an open position ( may not have been wide...
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    MC 165 Inline 6 timing

    Re: MC 165 Inline 6 timing I have gone back and done some sanding and I think I can just make out a 0 and a 12 mark, so I hope I will be good to go. Pic attached. I can make out a 12 fairly clearly and counting back by 2 degrees gets to what could be seen as a fuzzy 0. Thanks for help so far! Alan
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    MC 165 Inline 6 timing

    I have just installed a fresh rebuild 250cu in inline 6 into my boat. Rebuilt the carb while I was at it. Got it started without much difficulty - ta dah - hooray for me! Now I need to set the ignition timing. The timing marker has notches, but I can not see where the "0" mark is. There is...
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    250 inline 6 toasted

    Had to run in on my kicker last fishing trip to Nootka sound. Engine (MC165 I6)seemed down on power at start of trip, went thru a bunch of oil, topped up on oil, and on the run home ....... wack wack wack - shut er down. Start up, same nasty noise at idle, start kicker and putt home. No water in...
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    Mercruiser 165hp I6 valve cover gasket

    I have a 1976 Mercruiser I6 250cu in engine. I am getting oil into the bilge and I think (hope) it is coming from the rear of the valve cover gasket. Can I go to my local auto parts store and get a valve cover gasket for a '76 250cu in I6 truck engine or should I go to my marine store and get...
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    drive shaft seal

    Hello, I am putting my MC1 upper and lower back together after a new water pump, shift shaft and bushing. I am going to replace the lip seal in the upper where the drive shaft from the lower enters the upper case. I don't know which way the seal is to be installed. Does the spring face the...
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